.model {
  display: none;
  position: fixed;
  top: 50px;
  bottom: 50px;
  left: 10px;
  right: 10px;
  z-index: 21;
  background: #f0f8ff;
  border-radius: 5px;
  box-shadow: 0 2px 4px 0 rgba(194, 194, 194, 0.5);
}
.xiaohua {
  display: inline-block;
  width: 30px;
  height: 30px;
  vertical-align: middle;
}
.model-cont {
  position: absolute;
  top: 50px;
  bottom: 50px;
  left: 0;
  right: 0;
  padding: 0 20px;
  overflow-y: auto;
}
.model-head-title {
  width: 100%;
  height: 50px;
  line-height: 50px;
  font-size: 25px;
  text-align: center;
}